25678033580 has 24 divisors (see below), whose sum is σ = 55071188928. Its totient is φ = 10052676608.

The previous prime is 25678033561. The next prime is 25678033597. The reversal of 25678033580 is 8533087652.

It is a super-2 number, since 2×25678033580² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13657589 + ... + 13659468.

It is an arithmetic number, because the mean of its divisors is an integer number (2294632872).

Almost surely, 2^25678033580 is an apocalyptic number.

25678033580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25678033580 is an abundant number, since it is smaller than the sum of its proper divisors (29393155348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25678033580 is a wasteful number, since it uses less digits than its factorization.

25678033580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27317113 (or 27317111 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 25678033580 in words is "twenty-five billion, six hundred seventy-eight million, thirty-three thousand, five hundred eighty".